

Insulation joints (or isolation couplings or isolation joints) provide electrical isolation and cathodic protection in pipelines, tanks and pump stations where oil, gas and water are the carrier fluids. Insulation fittings are available in sizes ranging from 2 to 48 and pressures ranging from ANSI 150 to ANSI 900. Three features ensure electrical isolation. 1. insulating gaskets prevent metal-to-metal contact at the joints 2. Internal cavities are filled with a special dielectric compound 3. Inner and outer surfaces are coated with two (2) coats of non-conductive epoxy paint, or according to customer specifications. The welded end hubs of our insulated joints are supplied according to the customer's pipe specifications. Optional extra-long stubs (supplied by the customer) can be included in the completed joint. Features of insulating joints: 1. Non-conductive material: The primary feature of an insulating joint is that it is made of a non-conductive material, which prevents the transfer of electrical current. 2. Easy to install: Insulating joints are typically easy to install, as they do not require any special tools or equipment. 3. Wide temperature range: Many insulating joints are designed to withstand a wide range of temperatures, making them suitable for use in a variety of applications. 4. Chemical resistance: Some insulating joints are made of materials that are resistant to chemical corrosion, which makes them suitable for use in chemical processing plants or other environments where chemicals are present. The primary advantage of an insulating joint is that it provides electrical isolation between two sections of pipe, which can help to prevent electrical accidents and protect personnel. Insulating joints are commonly used in a variety of applications, including: 1. Chemical processing plants: In chemical processing plants, insulating joints are used to prevent the transfer of electrical current between pipes, which can help to prevent explosions or other accidents. 2. Oil and gas pipelines: Insulating joints are used in oil and gas pipelines to prevent the transfer of electrical current between pipes, which can help to prevent fires or other accidents. 3. Power plants: Insulating joints are used in power plants to prevent the transfer of electrical current between pipes, which can help to prevent electrical accidents and protect personnel. 4. Water treatment plants: Insulating joints are used in water treatment plants to prevent the transfer of electrical current between pipes, which can help to prevent electrical accidents and protect personnel.
| HS Code | 7307.93 |
| Brand | EximNext |
| Material | Carbon Steel A105/A350 with G10/G11 Glass Phenolic Insulating Sleeve |
| Type | Insulating Joint / Isolation Coupling |
| Pressure Rating | ASME Class 150 to Class 2500 / PN20 to PN420 |
| Size Range | DN25 to DN1200 (1" to 48") |
| Insulation Material | G10 Phenolic / G11 Epoxy / PEEK / Fiber-Reinforced Polymer |
| Dielectric Strength | Min 10 kV at 50Hz (up to 35 kV for high-voltage applications) |
| Temperature Range | -30C to +120C standard; extended to +200C with special materials |
| Standard | API 6D, ASME B16.5, ISO 14313, NACE MR0175 / MR0103 |
| Application | Oil, Gas, Water Pipelines, Refineries, Petrochemical, Subsea, Cathodic Protection Systems |
| Packaging | Wooden Crate / Pallet with VCI Film, Export-Ready |
| Origin | EU / USA / China / India (Multiple Origins Available) |
Insulating joints (also called isolation couplings) are critical components in oil, gas and water pipeline systems where electrical isolation is required to prevent galvanic corrosion and enable effective cathodic protection. These fittings typically feature steel flanges separated by a high-dielectric insulating sleeve and gasket kit, rated for pressures up to Class 1500 and sizes from DN15 to DN600. Widely used in refinery, offshore platform and long-distance transmission pipeline projects, they are essential procurement items for EPC contractors and pipeline operators globally. Typical standards include API 6A, ASME B16.5 and ISO 14313.
| Business Type | Supplier |
| Year Established | Recently Joined |
| Employees | Contact Supplier |
| Annual Revenue | Contact Supplier |
| Main Products | View Products Tab |
| Major Markets | Global |
| Response Time | <4h |
| Response Rate | New Supplier |
Insulating Joint is available for wholesale import from Shanghai Changhao High Pressure Pipefittings Co.,ltd, a verified Supplier based in China. The current FOB price is 20. Minimum order quantity starts at 1 Bags. HS Code: 7307.93 — used for customs classification and import duty calculation. Key product specifications include 7307.93, EximNext, Carbon Steel A105/A350 with G10/G11 Glass Phenolic Insulating Sleeve.
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When sourcing Insulating Joint for your business, securing the right balance of quality and cost is essential. Shanghai Changhao High Pressure Pipefittings Co.,ltd, a verified supplier based in China, offers this product with key specifications including Insulating Joint / Isolation Coupling, ASME Class 150 to Class 2500 / PN20 to PN420, and DN25 to DN1200 (1" to 48"). By purchasing directly from the manufacturer or authorized exporter, buyers can negotiate favorable FOB prices starting at $20/Bags and manage bulk orders with a minimum order quantity (MOQ) of 1 Bags. This product is actively traded under HS Code 7307.93, making it a staple in the Metal Products sector with strong demand from importing countries worldwide.
Importing Insulating Joint requires careful attention to shipping logistics, customs compliance, and secure payment terms. Shanghai Changhao High Pressure Pipefittings Co.,ltd offers flexible shipping options such as Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. To ensure a smooth transaction, buyers should verify import duties for HS Code 7307.93 in their destination country. Common payment methods for international B2B transactions include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P). All transactions and RFQs are facilitated through EximNext, a leading online B2B marketplace designed to make cross-border trade secure and efficient.
Finding trustworthy partners is the foundation of successful importing. The supplier of this Insulating Joint has been verified on our platform. Whether you are a distributor, wholesaler, or procurement manager, you can request a free quotation, ask for product samples, and finalize your bulk purchase with confidence. EximNext hosts thousands of verified manufacturers and exporters across 200+ countries. Explore similar products in the Metal Products category and connect with top-tier exporters on our comprehensive B2B marketplace. Start your sourcing journey today.
Importing Insulating Joint requires careful attention to shipping logistics, customs compliance, and secure payment terms. Common shipping options include Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. Buyers should verify import duties for HS Code 7307.93 in their destination country. Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P).
The current listed wholesale price for Insulating Joint from Shanghai Changhao High Pressure Pipefittings Co.,ltd is $20/Bags on FOB terms from China. Prices may vary depending on order volume, packaging, and destination. For the most accurate bulk quote, send a direct RFQ to Shanghai Changhao High Pressure Pipefittings Co.,ltd through EximNext.
The supplier, Shanghai Changhao High Pressure Pipefittings Co.,ltd, has set a Minimum Order Quantity (MOQ) of 1 Bags for Insulating Joint. For sample requests or smaller trial orders, contact the supplier directly through our platform's inquiry system.
For international shipping and customs clearance, Insulating Joint is classified under HS Code 7307.93. Buyers should verify their local customs regulations to determine applicable import duties and taxes for this classification.
To import Insulating Joint from China, negotiate shipping terms (FOB, CIF, or EXW) directly with Shanghai Changhao High Pressure Pipefittings Co.,ltd. Ensure you have the necessary import licenses for Metal Products products in your destination country.
Yes, Shanghai Changhao High Pressure Pipefittings Co.,ltd is a verified supplier on EximNext. You can view their complete company profile, business registration details, certifications, and export history before placing a bulk order.
The key specifications for Insulating Joint supplied by Shanghai Changhao High Pressure Pipefittings Co.,ltd include Insulating Joint / Isolation Coupling, ASME Class 150 to Class 2500 / PN20 to PN420, and DN25 to DN1200 (1" to 48"). For a complete technical data sheet or Certificate of Analysis (COA), send an inquiry directly to the supplier through EximNext.
Shanghai Changhao High Pressure Pipefittings Co.,ltd offers Insulating Joint with standard export packaging. Custom packaging, private labeling, and OEM/ODM options may also be available for large wholesale orders.
Insulating Joint is actively imported by buyers worldwide. Request a destination-specific CIF or CFR quote from Shanghai Changhao High Pressure Pipefittings Co.,ltd through our platform.
Shanghai Changhao High Pressure Pipefittings Co.,ltd maintains international quality certifications. These ensure that the Insulating Joint meets international quality, safety, and regulatory standards required for cross-border trade.
Click "Request Quotation" on this product page, specify your required quantity, preferred shipping terms, and destination country. Shanghai Changhao High Pressure Pipefittings Co.,ltd will respond with a detailed wholesale quote including FOB pricing, lead time, and payment options.
Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), Documents against Payment (D/P), and Escrow services. Confirm accepted terms directly with Shanghai Changhao High Pressure Pipefittings Co.,ltd.
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